garadinervi:Günther Uecker, March 13, 1930 / 2019(image: Günther Uecker, Optische Partitur Ulm, 2000

garadinervi:Günther Uecker, March 13, 1930 / 2019(image: Günther Uecker, Optische Partitur Ulm, 2000) -- source link